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(svn r11797) -Fix: Add protection against not already created industry while doing industry callback. 

Some variables used were linked to invalid industry.
This commit is contained in:
belugas 2008-01-09 18:14:29 +00:00
parent 785572ea32
commit f67b5798a0
2 changed files with 24 additions and 6 deletions
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29
src/newgrf_industries.cpp
View File

@ -201,7 +201,23 @@ uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte par
{
const Industry *industry = object->u.industry.ind;
TileIndex tile = object->u.industry.tile;
const IndustrySpec *indspec = GetIndustrySpec(industry->type);
IndustryType type = object->u.industry.type;
const IndustrySpec *indspec = GetIndustrySpec(type);
if (industry == NULL) {
/* industry does not exist, only use those variables that are "safe" */
switch (variable) {
/* Read GRF parameter */
case 0x7F: return GetGRFParameter(type, parameter);
/* Manhattan distance of closes dry/water tile */
case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
}
DEBUG(grf, 1, "Unhandled property 0x%X (no available industry) in callback 0x%x", variable, object->callback);
*available = false;
return UINT_MAX;
}
switch (variable) {
case 0x40:
@ -278,7 +294,7 @@ uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte par
case 0x7C: return industry->psa.Get(parameter);
/* Read GRF parameter */
case 0x7F: return GetGRFParameter(industry->type, parameter);
case 0x7F: return GetGRFParameter(type, parameter);
/* Industry structure access*/
case 0x80: return industry->xy;
@ -368,7 +384,7 @@ static void IndustrySetTriggers(const ResolverObject *object, int triggers)
object->u.industry.ind->random_triggers = triggers;
}
static void NewIndustryResolver(ResolverObject *res, TileIndex tile, Industry *indus)
static void NewIndustryResolver(ResolverObject *res, TileIndex tile, Industry *indus, IndustryType type)
{
res->GetRandomBits = IndustryGetRandomBits;
res->GetTriggers = IndustryGetTriggers;
@ -380,6 +396,7 @@ static void NewIndustryResolver(ResolverObject *res, TileIndex tile, Industry *i
res->u.industry.tile = tile;
res->u.industry.ind = indus;
res->u.industry.gfx = INVALID_INDUSTRYTILE;
res->u.industry.type = type;
res->callback = CBID_NO_CALLBACK;
res->callback_param1 = 0;
@ -394,7 +411,7 @@ uint16 GetIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, In
ResolverObject object;
const SpriteGroup *group;
NewIndustryResolver(&object, tile, industry);
NewIndustryResolver(&object, tile, industry, type);
object.callback = callback;
object.callback_param1 = param1;
object.callback_param2 = param2;
@ -465,7 +482,7 @@ bool CheckIfCallBackAllowsCreation(TileIndex tile, IndustryType type, uint itspe
ind.selected_layout = itspec_index;
ind.town = ClosestTownFromTile(tile, (uint)-1);
NewIndustryResolver(&object, tile, &ind);
NewIndustryResolver(&object, tile, &ind, type);
object.GetVariable = IndustryLocationGetVariable;
object.callback = CBID_INDUSTRY_LOCATION;
@ -518,7 +535,7 @@ void IndustryProductionCallback(Industry *ind, int reason)
{
const IndustrySpec *spec = GetIndustrySpec(ind->type);
ResolverObject object;
NewIndustryResolver(&object, ind->xy, ind);
NewIndustryResolver(&object, ind->xy, ind, ind->type);
if ((spec->behaviour & INDUSTRYBEH_PRODCALLBACK_RANDOM) != 0) object.callback_param1 = Random();
int multiplier = 1;
if ((spec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) multiplier = ind->prod_level;

1
src/newgrf_spritegroup.h
View File

@ -231,6 +231,7 @@ struct ResolverObject {
TileIndex tile;
Industry *ind;
IndustryGfx gfx;
IndustryType type;
} industry;
struct {
const struct CargoSpec *cs;